Kessel, no doubt. Partially because of a (hopefully) reliable centre in Connolly on his line, and partially because, he'll have good linemates to help him and vice versa. Besides, Kessel is due for an upgrade in scoring.
Second to him, I would peg Kulemin nudging Grabovski in that category. Don't know why, but it's just that "Cool Lemon" plays so well he's bound to post higher numbers on the statistics board.
Grabovski and MacArthur will continue with posting credible digits, with Grabo one-upping MarArthur here.